Secondo una notizia riportata su VR-Zone, ci sarebbero dei problemi con gli attuali alimentatori, se affiancati alle nuove CPU Intel Haswell. La ragione di questi problemi potrebbe trovarsi nei risparmi energetici C6/C7, e alla bassissima energia richiesta dalla piattaforma Shark Bay.

According to Intels announcement, chipzilla will show it's upcoming 4th generation Core processors during Computex on the 4th of June. Haswell will not only bring per MHz performance improvements, it will also feature new X86 and AVX2 instructions. Intel has also overworked the iGPU, which should now be significantly faster.


Trusting a report from VR-Zone we believe that Intels Shark Bay platform, on with Haswell will be running, needs power supplies that offer a minimum load supply of 0.05A on the CPU 12V2 rail. In other words that means 0.6 Watt. In this regard it's well possible, that older PSUs or bargain models won't be able to meet these specs. When an Intel Haswell CPU requests a C6/C7 power state, then the system becomes unstable, triggering UVP/OVP and causing a shutdown. Taking a look at the ATX12V v2.3 specs, which have been issued, when Ivy Bridge was released last year, shows that back then minimum load was 0.5A.


Ciò che ci fa preoccupare più di tutto è che nessun produttore, neanche quelli high-end, comunica le specifiche del carico minore supportato. A questo punto risulta impossibile fare una lista di compatibilità tra PSU e CPU Haswell.


Source: VR-Zone